body{
    background: url(../images/sp.jpg) no-repeat;
    background-size: cover;
}

.lock-card{
    position: absolute;
    width: 420px;
    height: 160px;
    border-radius: 6%;
    opacity: 0.8;
    right: 40%;
    bottom: 40%;

}
.layui-card-header{
    font-size: 16px;
    font-weight: 600;
    margin-top: 10px;
    text-align: center;
}
